Localised filters inside core block PHP render functions

[lukgoh]

Hello everyone, I'm trying to see if I can get an official answer here.
I had an experience recently, I needed to filter the output of the core/author-biography block on the front-end.
In the blocks render function there is the following:
$author_biography = get_the_author_meta( 'description', $author_id );

Is there any reason that there is no localised apply_filters function used here? I know you could use the filter: "get_the_author_{$field}", but then you have the issue of context. What if I only wanted to filter in the block. Currently I would have to hijack the entire render function?

I really look forward to reading the responses.

Thanks,

Luke.